Ridley X-Ride Disc geometryCyclocross · 2023 · 6 sizes, from XXS to XL
The Ridley X-Ride Disc is a cyclocross bike available in 6 sizes, from XXS to XL. Stack ranges from 496 to 595 mm and reach from 382 to 399 mm. Its geometry is low and long, with a racing fit. All sizes share 425 mm chainstays.
What size X-Ride Disc do I need?
Enter the stack and reach of a bike that fits you well and we will tell you which size is closest and how to set it up.
Enter your stack and reach to see which size fits you best.
Geometry chart by size
Measurements in mm and degrees, as published by Ridley. The ones that matter most for choosing a size are in bold.
| Size | XXS | XS | S | M | L | XL |
|---|---|---|---|---|---|---|
| Stack | 496 | 512 | 529 | 550 | 571 | 595 |
| Reach | 382 | 383 | 383 | 382 | 391 | 399 |
| Effective top tube | 515 | 525 | 535 | 545 | 560 | 575 |
| Head tube length | 89 | 100 | 115 | 135 | 155 | 180 |
| Head angle | 71.5° | 72.0° | 72.0° | 72.0° | 72.0° | 72.0° |
| Chainstay length | 425 | 425 | 425 | 425 | 425 | 425 |
| Wheelbase | 1,000 | 1,000 | 1,004 | 1,009 | 1,023 | 1,039 |
| BB drop | 53 | 57 | 60 | 62 | 64 | 64 |
| Standover | 743 | 759 | 776 | 797 | 817 | 841 |
| Seat tube (method not stated) | 450 | 475 | 500 | 525 | 550 | 575 |
| Seat angle (method not stated) | 75.0° | 74.5° | 74.0° | 73.5° | 73.5° | 73.5° |
Source: Ridley official website · data from 11 Nov 2026. Spot a mistake?
Stack and reach of every size
Higher means a taller front end; further right means a longer reach. The blue dot is your search.
Character of each size
Compared with other cyclocross bikes. Further right means more of that quality.
Bikes with similar geometry (size S)
The closest size of other cyclocross models, by stack and reach.
Frequently asked questions
What size X-Ride Disc do I need?
It depends on your position, not just your height. The most reliable way is to compare the stack and reach of a bike that fits you with those of each size (from 496/382 mm in size XXS to 595/399 mm in size XL). The size finder on this page shows the closest size and the stem and spacers you would need.
What are the stack and reach of the X-Ride Disc in size S?
Stack of 529 mm and reach of 383 mm, with an effective top tube of 535 mm and a head angle of 72.0°.
Is the X-Ride Disc a racing or an endurance bike?
Racing. In size S its stack-to-reach ratio is at percentile 11 of cyclocross bikes: a low, stretched position.